Align object protocol helper names with CPython APIs (#190790)
Summary:
## Summary
This PR renames helper functions in `torch/_dynamo/variables/object_protocol.py`
to align their names with the corresponding CPython C API functions.
The rename is purely mechanical and does not change behavior. All imports,
call sites, comments, and documentation have been updated accordingly.
### Naming updates
| Previous | New |
|----------|-----|
| vt_getitem | generic_getitem |
| generic_len | generic_size |
| generic_bool | generic_is_true |
| vt_mapping_size | pymapping_size |
| vt_sequence_getitem | pysequence_getitem |
| vt_sequence_setitem | pysequence_setitem |
| sequence_delitem | pysequence_delitem |
| sequence_repeat | pysequence_repeat |
| sequence_inplace_repeat | pysequence_inplace_repeat |
| generic_contains | pysequence_contains |
| generic_int | pynumber_int |
| generic_float | pynumber_float |
| generic_add | pynumber_add |
| generic_inplace_add | pynumber_inplace_add |
| generic_multiply | pynumber_multiply |
| generic_inplace_multiply | pynumber_inplace_multiply |
| generic_matmul | pynumber_matrix_multiply |
| generic_inplace_matmul | pynumber_inplace_matrix_multiply |
| generic_neg | pynumber_negative |
| generic_pos | pynumber_positive |
| generic_abs | pynumber_absolute |
| generic_invert | pynumber_invert |
| generic_iternext | pyiter_next |
## Testing
- Existing tests pass.
- This change is a refactor only and introduces no behavioral changes.
Fixes #190702
X-link: https://github.com/pytorch/pytorch/pull/190790
Approved by: https://github.com/Skylion007, https://github.com/guilhermeleobas
Reviewed By: huydhn
Differential Revision: D113823400
fbshipit-source-id: 5018d369bb4040e3b5c30f3c99539ed3d532111e
Author
generatedunixname499836121